Dorman M390350 Brake Master Cylinder

Overview of the Dorman Brake Master Cylinder M390350

The Dorman Brake Master Cylinder M390350 is designed for reliable brake hydraulics performance in select Chevrolet, Geo, and Toyota vehicles. This master cylinder includes a reservoir and sensor, engineered to meet the specific needs of models like the Toyota Corolla and Geo Prizm.

• Master cylinder bore diameter: 0.813 inches
• Constructed from durable aluminum material
• Includes reservoir and sensor for integrated functionality
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Secondary outlet thread diameter of 10 mm
• Package contains the master cylinder only; mounting hardware not included

Detailed Product Description

The Dorman M390350 brake master cylinder is crafted from aluminum, providing a balance of strength and corrosion resistance essential for brake hydraulics. Its 0.813-inch bore diameter ensures proper hydraulic pressure for effective braking. The included reservoir allows for fluid storage and monitoring, while the integrated sensor supports brake system diagnostics. Featuring two outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, this master cylinder is designed to fit the brake systems of Chevrolet, Geo, and Toyota vehicles, specifically models such as the Toyota Corolla and Geo Prizm.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure and pedal feel
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake warning light issues related to sensor failure
• Solves inconsistent braking performance due to worn internal components
• Prevents brake system failure from reservoir cracks or leaks

Installation Notes and Tips

• Ensure compatibility with Chevrolet, Geo, and Toyota Corolla or Prizm models before installation
• Bleed the brake system thoroughly after installation to remove air
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Mounting hardware is not included; retain original hardware or source separately
• Check sensor connections carefully to maintain brake system diagnostics

Quality Assurance and Warranty

Dorman manufactures the M390350 brake master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction offers durability under typical operating conditions. This part includes a sensor and reservoir to maintain system integrity. While mounting hardware is not included, the product is backed by Dorman's quality control processes. Please refer to Dorman's official warranty policy for specific coverage details.